福建中立恒自动化设备有限公司

1．输入/输出单元

输入/输出单元通常也称I/O单元或I/O模块，是PLC与工业生产现场之间的连接部件。

PLC通过输入接口可以检测被控对象的各种数据，以这些数据作为PLC对被控制对象进行控制的依据；同时PLC又通过输出接口将处理结果送给被控制对象，以实现控制目的。

由于外部输入设备和输出设备所需的信号电平是多种多样的，而PLC内部CPU的处理的信息只能是标准电平，所以I/O接口要实现这种转换。

I/O接口一般都具有光电隔离和滤波功能，以提高PLC的抗干扰能力。另外，I/O接口上通常还有状态指示，工作状况直观，便于维护。

PLC提供了多种操作电平和驱动能力的I/O接口，有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有：数字量（开关量）输入、数字量（开关量）输出、模拟量输入、模拟量输出等。

常用的开关量输入接口按其使用的电源不同有三种类型：直流输入接口、交流输入接口和交/直流输入接口。

常用的开关量输出接口按输出开关器件不同有三种类型：是继电器输出、晶体管输出和双向晶闸管输出。

继电器输出接口可驱动交流或直流负载，但其响应时间长，动作频率低；而晶体管输出和双向晶闸管输出接口的响应速度快，动作频率高，但前者只能用于驱动直流负载，后者只能用于交流负载。

PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出（I/O）点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时，可通过PLC的I/O扩展接口对系统进行扩展。

2．通信接口

PLC配有各种通信接口，这些通信接口一般都带有通信处理器。

PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。

PLC与打印机连接，可将过程信息、系统参数等输出打印；与监视器连接，可将控制过程图像显示出来；与其它PLC连接，可组成多机系统或连成网络，实现更大规模控制。

与计算机连接，可组成多级分布式控制系统，实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。

3．智能接口模块

智能接口模块是一独立的计算机系统，它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。

它作为PLC系统的一个模块，通过总线与PLC相连，进行数据交换，并在PLC的协调管理下独立地进行工作。

PLC的智能接口模块种类很多，如：高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。

以下链接皆有货

 NIAM01 BAILEY CONTROLS 6636605A1 TERM MODULE ANALOG MASTER

 NIAC02 BAILEY CONTROLS 6636603A1 TERM MODULE ANALOG SAMEDAY

ALLEN BRADLEY 1497-H-CXSX-0-N  TRANSFORMER 1497HCXSX0N

 WESTINGHOUSE 3111726-001 / 3111726001 FCTION CARD CIRCUIT BOARD A

 ZAUGG ELEKTRONIC AG CH-4573 LOHN PC BOARD CAPACITOR CH4573 NIB

WESTINGHOUSE 7379A06G02 2QCI12 SUB 1 OVATION TURBINE ID: M23665

 BECKMAN LINEAR RA-5 33661NE / 40889EA CONDUCTIVITY MODULE ID: M23845

 BECKMAN LINEAR RA-5 33661NE / 40889EA CONDUCTIVITY MODULE ID: M231023

  FOXBORO D0140AY 128K MEMORY BOARD

 T778 FOXBORO D3001DP PWA AMU MUX AMP

ABB MASTER-K 103377/1 24SX F.C. PCB CIRCUIT BOARD ID: M231160

 YASKAWA ELECTRIC JAMSC-C8110 COMMICATION MODULE JAMSCC8110

MKS 122B-11993 | 122B11993 TYPE 122B PRESSURE TRANSDUCER 100 TORR

 OMEGA 6001-K-F1-F2-A1 TEMPERATURE CONTROLLER 6001KF1F2A1 0-2400F

BAILEY 6637804CI BACKPANEL ASSY FOR CHASSIS PCB CIRCUIT BOARD 12 SLOT NEXTDAYAIR

 BOSCH SE220 0-608-830-157 PC CONTROL BOARD 0608830157

81.5304 TELLABS 5304 T1DAF021AA 815304 ALARM TEST MODULE INPUT

MD2000  MD2000 PELCO MOTION DETECTOR 115VAC 50/60HZ 3W1CHANNEL

 BECKMAN LINEAR RA-5 33661NE / 40889EA CONDUCTIVITY MODULE ID: M23797

THERMOLYNE RC1915 HOT PLATE 6” X 6”  CN9000A DIGITAL TEMP CONTROL S/N: 20000250

9810705023 ATLAS COPCO 9810-7050-23 VER.P-176 RE ASSEMBLY QUALIFIER

MOORE 39BCMNAN 16197-1/02 BCM BUS CONTINUATION MODULE APACS 24V SAMEDAY

 MEGGITT AIRDYNAMICS H2066B1 PUMP 115-200V 400HZ 3PH S/N:2148

 MEGGITT AIRDYNAMICS H2066B1 PUMP 115-200V 400HZ 3PH S/N:2147

818S/TC/R4MA20/CTRIN/DBD/X4MA20/NONE/NONE/SN/01/32/800/F/NO/NO/E/IN/S/N//

  001022008 GE 001.022.008 GENERATOR EXCITER BOARD

  GE FANUC IC693MDL645J PLC INPUT MODULE FACTORY

COMPUTER POWER SYSTEMS 112208 REV T MAIN LOGIC BOARD ASSY ID: M23093

 WESTINGHOUSE 671A500G01 PCB CIRCUIT BOARD ID: M23766  SAME BUS DAY

MDC KIV-150-P-PI-SP INLINE VACUUM VALVE MAC 35A-AAA-DDAA-1CA

 MOORE 39ODM115ACCAN 16184-61/02 OUTPUT DISCRETE MODULE 24V-DC

SIGNET Ph/mV CONTROLLER MK703 pH MONITOR / CONTROLLER S/N: 707001

 LABOD ELECTRONIC TU-20.1 PC BOARD ASSEMBLY TU201

BROOKS LR-056 | GFD15T5BSM DISPLAY / SOLID SENSEN II PRESSURE XDUCER

 GT-1000 BROOKS INSTRUMENTS 1020NM0A2AA3F9C00001 FLOW METER 175PSIG

 NEC FIP20X2FB DISPLAY

 TEXAS INSTRUMENTS PLC 505-4708 MODULE DIGITAL OUTPUT 5054708 NIB

 JASKAWA B2904 JAMSC-B2904V MEMOCON-SC MODULE S/N 6HG946-001-092 ID: M40067

GE 1589K48G700 / 44A307718 ACCELERATION CIRCUIT BOARD ID: M231017

 DO137AE FOXBORO D0137AE OPERATOR INTERFACE DISPLAY CRT

 BANNER ENGINEERING P1B65Q PHOTOELECTRIC PRESENCE PLUS W/O LENS

D51104240I00193 DAC 3441042401 VER.A1 CIRCUIT BOARD 344I04240I

9810705023 ATLAS COPCO 9810-7050-23 VER.P-176 RE ASSEMBLY QUALIFIER 9 PIN FEMALE

 FOXBORO BALSBAUGH 0006-009 / 5S8710 / 1700-254B CIRCUIT BOARD

 HELM B10A101-1C PC BOARD ASSEMBLY B10A1011C B10C101-1 B10A101-1S

 ELECTROSWITCH SERIES 24 74PB205LL ROTARY CAM SWITCH 240/480VAC ID: 2410A

 ELECTROSWITCH SERIES 24 74PB205LL ROTARY CAM SWITCH 240/480VAC ID: 2410B

22742-00 MDC AV-050-P-SP ANGLE VALVE 1/2 MALE VCR W/ 1/8 TUBING

 APTECH AP3000SM 3PWD MV4 FV4 FV4 AIR ACTUATED AP3000SM3PWDMV4FV4FV4

GO PR2-8B11A3G111 PRESSURE REGULATOR  MILLIPORE SANDWICH FILTER QE1 50155 ASSY

 MITSUBISHI E-20TP HAND HELD PROGRAMMER FX-20GM MODULE E20TP -NIB

NIB OMEGA PX655-25DI | PX65525DI DIFFERENTIAL PRESSURE TRANSMITTER

 GENERAL ELECTRIC 193X-801DAG01 COORDINATION SIGNAL 193X801DAG01

 QUARNDON SYSTEMS XYCOM XVME-220 32PT PRGRAMMABLE SCANNER XVME220

DOCUMATION 40061905 PCB CIRCUIT BOARD S/N: 1040649E ID: M23539

5X NIB BES517345M1Y03 BALLUFF BES-517-345-M1-Y-03 PROXIMITY SWITCH INDUCTIVE 3M

EUROTHERM 3208 / 9715687 / 168507 TEMPERATURE CONTROLLER ID: 6477

OTHERM 9715687 / 168507 TEMPERATURE CONTROLLER

 EMERSON CR1M1SCX1-A3 MPU/ROM ASSY CRIMISCX1A3 30B7248X022-76 NIB

TRUMPF VSBC 4 18-06-71-00 / 31.125-1010.1 L/04 CPU BOARD MODULAR ID: M23648

HAAS-LASER VSBC-4 31.125-1010.1 B/04 CPU BOARD MODULAR ID: M23713 SAME DAY

 HANNA pH HI8710E MEASUREMENT SENSOR LEVEL TEST EQUIPMENT 4-20MA

HONEYWELL W7751D-2008 CONTROLLER 10 VAV  LONWORKS W7751D2008

SE80SS130  HEIDELBERG PIA/PAMUX INTERFACE ASSEMBLY SE80D129 REV B

INDRAMAT DAE 1.1 / 243555-17279 A11 I/O MODULE 109-0785-4B19-04

EDSTROM 6100-9001-010R REV A ENVIROMENTAL WATCHDOG LOCAL PROCESSOR S/N: 11601

 YASKAWA JANCD-XTU01B / DF9203621-C0S PC BOARD MODULE ID: M23377

 YASKAWA JANCD-XTU01B REV EO / DF9203621-C0S PC BOARD MODULE

 YASKAWA JANCD-SV02C SERVO CONTROL BOARD JANCDSV02C DF9200745-A0

 WESTINGHOUSE 3111286-001 / 2111215-1 REV D PCB CIRCUIT BOARD

 WESTINGHOUSE 2111215-1 / 3111286-001 REV D CIRCUIT BOARD ID 4985

6221043 HONEYWELL 622-1043 VR 1.1 PTP CONTROL MODULE NEXT DAY AIR AVAILABLE

 FOXBORO D3001MD PC BOARD PWA BI.DR/RC-NT

FARNELL NA140P500 POWER SUPPLY 115V-3A RMS, 230V-1.75A RMS 50-60HZ

 TRUMPF MSTV2 18-06-74-00/B | 0778027 | 18-06-48-AH V1.2 CONTROLLER ID:M23801

EUROTHERM 9715687 3208 / 168507 TEMPERATURE CONTROLLER ID:5356 SSAME BUS DAY

EBERLINE SP12A 11384-D02 / 11385-D02F / 97-44083-8 PCB CIRCUIT BOARD ID: M231016

WESTRONICS CB100188-02 REV C CPU BOARD CB10018802

29203125 CITIZEN 29203-125 REV A6 BREAKER PCB  CY 03VO ASSY MODULE

MIDWEST MICROWAVE CPL-5232-10-SMA-79 RF DIRECTIONAL COUPLE 2-18GHZ

BERGER LAHR VRDM3913/50LWBOO STEPPER MOTOR 230VAC 3P 6Nm 2.25A

PC011C ISI ROBOTICS PC011C ACI CONTROL BOARD INPUT 18PIN STRAIGHT

  FHOH SIEMENS MCCB MAX FLEX HANDLE

 COLMAN 80CC-11001-101-0-00 SEQ. MODULE MACO 8000 80CC11001101000

FESTO MPA-FB-VI MODULAR  TERMINAL VALVE (3) 533347  (1) 533351

SIMCO A1C7S | 0805107000 POWER SUPPLY IT 115VA 2.5mA 7kV IP-54

105-310-6PLESSEY PC BOARD W/3DIGIT THUMBWHEEL 10531061

 PF2A7210367 SMC PF2A721-03-67 DIGITAL FLOW SWITCH INTEG SENSOR

 UFM 015GM-8-250V.9-A1NR-3D TYPE 12-13 FLOW METER

 YASKAWA JASP-AZ001B REV B03 JASPAZ001B CONTROL PCB BOARD UM816B

 ANAHEIM AUTOMATION BLD12088A STEP MOTOR DRIVER BLD-1/2088A

4-04H 2695 BENDIX DYNAPATH CPU BOARD DELTA PIC 404H

 LOW 02-11263-0001 REV C PCB CIRCUIT BOARD 02112630001

 CHES AH232123 ISSUE 4 | 4890 RELAY OUTPUT CARD ID: M23378  SAME DAY

 BAILEY CONTROLS NLIS01 INTERFACE MODULE LOOP SLAVE NLIS-01 NET90

42018-72 BENDIX DYNAPATH 4201872 DELTA/SERVO TRANSDUCER MODULE

R25-2048-24 BEI SENSORS R25204824 ENCODER 24V 19PIN MALE SAMEDAY

 SMC SQ1-F(SD5365) IT  SQ1A31N-5-C4-Q  SSQ1000-10A-3

FESTO CPX-FB13 | CPX-GE-EV-S | MPA-FB-VI 53041(6X) 533347  (2X) 533351

10561061 PLESSEY 105-610-61 PC BOARD W/DUAL KNOBS COAXIAL PORT

105-210-6PLESSEY PC BOARD DD/QUANTUM 9.1GB SCSU SCA 10521061

105-400-6PLESSEY PC BOARD W/RED/GREEN INDICATOR LIGHT 10540061

WESTINGHOUSE 2840A80G07 5QBI7 PCB BOARD WDPF CONTROL ID: M231151

WESTINGHOUSE 2840A80G07 5QBI18 DIGITAL OUTPUT ID: M231154

ROCHESTER RA-2835-A / RA2835A PROCESSOR BOARD MODULE

MILLIPORE FSDBD400JNOL DIGITAL FLOW CONTROL GAS N2 RANGE 300 SCCM

MILLIPORE FSDAD400CK0H / LD03103002 INTELLIFLOW DFC GAS CF4 200SCCM

WESTINGHOUSE 7379A21G02 SUB 12 6QAV17 ANALOG INPUT ID: M231258

WESTINGHOUSE 7379A21G02 SUB 9 6QAV17 ANALOG INPUT ID: M231259

WESTINGHOUSE 7379A21G02 6QAV17 SUB 15 ANALOG INPUT CARD ID: M231260 SAME DAY

WESTINGHOUSE 7379A21G02 5QAV20 SUB 11 ANALOG INPUT CARD ID: M231262 SAME DAY

 BOSCH PL6-AGC1 0 811 405 065 / 0811405065 AMPLIFIER CARD ID: M23197 FAST

 ELAN SRB-NA-R-C-24V Emergency Stop Relay 24VDC 250VAC 4765-99375

T90947  TEST PRODUCTS TEST CONNECTOR 65WAY PCM T90947 GM-3428B

LOT 10  AMPHENOL - 5015 CONNECTOR 97-3106B20-7S (8505-16661)

 ROSEMOT 3D39307H01 POWER CONTROL MODULE 3D39382G02 REV3-REV13

 CINCINNATI MILACRON CMACO 3-542-1177A OUTPUT PC BOARD 35421177A

15778-1 MOORE 15778-1-5 INPUT BOARD 6 CHANNEL  

A1SJHCPU MITSUBISHI CPU  A1SX4A1SY4A1SNMCA-8KE

 LAM101 CYBEROPTICS LAM-10-1 CLASS 1 LASER PRODUCT MAX 0.7 26884

WESTINGHOUSE 776-87553-6 / 2822A18G01 PCB CIRCUIT BOARD ID: M23096

ABB DSQC561 | 3HAC060831-001/01 PUSH BUTTON BRAKE RELEASE ID:M23248

ABB DSQC561 | 3HAC060831-001/01 PUSH BUTTON BRAKE RELEASE ID: M23350

WESTINGHOUSE 2840A80G07 5QBI7 PCB BOARD WDPF CONTROL ID: M231245

WESTINGHOUSE 2840A80G07 5QBI7 PCB BOARD WDPF CONTROL ID: M231274

 1771A1B ALLEN BRADLEY 1771-A1B B REV L01 PLC 4-SLOT I/O CHASSIS

 SIEMENS FLOWRITE 599 SERIES 272-03182 VALVE ACTUATOR  599-03182

 RILEY PRODUCT RAL-D-16 CONTROLLER VIBRATION RALD16 RAL D-16

MD20A1 SONY MD20A-1 POSITION DETECT MODULE  - REMOVED

 GIDDINGS  LEWIS 503-26842-00 | 5032684200 MODULE 44-PIN FAST‘N

515-0084 REV C  GENERIC 5150084 POWER SENSOR CHANNEL PLC 495-0198

 RELIANCE 51847-4 VOLTAGE DETECTOR VLDE 518474 0-51847-4 0518474